The Gross Domestic Income (GDI) is the total income received by all sectors of an economy within a State. It includes the sum of all wages, profits, and taxes, minus subsidies. Since all income is derived from production (including the production of services), the gross domestic income of a country should exactly equal its gross domestic product (GDP). The GDP is a very commonly cited statistic measuring the economic activity of countries, and the GDI is quite uncommon.